Overview
The JicTech RT028TR5T-Q3 is a versatile 2.8‑inch TFT LCD module designed for embedded applications that require a bright display, flexible interface options, and integrated touch input. Built on a TN panel (normally white) with EWV wide‑viewing polarizer, it offers 240×RGB×320 pixel resolution (QVGA), 262K colors, and a 12 o’clock optimal viewing direction. The dual SPI+18‑bit RGB interface allows easy configuration via SPI and full‑speed video data transfer via the RGB bus, fitting a wide range of MCUs and processors. An integrated 4‑wire resistive touch panel provides reliable input even with gloves. With 250 cd/m² typical brightness, 500:1 contrast ratio, and a compact 3.45mm overall thickness, this module is ideal for handheld devices, medical equipment, portable terminals, industrial control panels, and consumer electronics.
Key Features
- 2.8” diagonal TN panel – 12 o’clock best viewing direction, EWV polarizer for wider angle
- 240×320 resolution – sharp QVGA, 262K colors
- Module size – 50.0 × 69.2 × 3.45 mm (W×H×T)
- Active area – 43.2 × 57.6 mm
- Flexible interface – SPI (control) + 18‑bit RGB (data) – best of both worlds
- Brightness – 250 cd/m² typical – suitable for indoor use
- High contrast ratio – 500:1 typical
- Fast response time – 15ms typical (Tr+Tf)
- Integrated 4‑wire resistive touch – reliable, glove‑friendly
- Wide operating temperature – -20℃ to +70℃
- Backlight – 4 white LEDs (parallel), 80mA total current
- Driver IC – ILI9341V (well‑supported, mature)
- MTBF – 30,000 hours
- RoHS compliant
Applications
- Portable medical devices (patient monitors, diagnostic tools)
- Industrial HMIs & control panels
- Handheld test & measurement equipment
- Smart home gateways & security panels
- Automotive auxiliary displays
- Consumer electronics with touch interface
Technical Specifications
General Specifications
| Parameter | Value |
|---|
| LCD Size | 2.8 inch |
| Panel Type | a-Si TFT active matrix, TN (Normally White) |
| Resolution | 240 (RGB) × 320 pixels |
| Display Mode | TN / Normally White / Transmissive |
| Number of Colors | 262K (6‑bit per color) |
| Viewing Direction | 12 o’clock (best view) |
| Contrast Ratio | 500 : 1 (typical) |
| Luminance (Brightness) | 250 cd/m² (typical), 200 cd/m² (min) |
| Module Size (W×H×T) | 50.0 × 69.2 × 3.45 mm |
| Active Area (W×H) | 43.2 × 57.6 mm |
| Pixel Pitch | 0.18 × 0.18 mm |
| Driver IC | ILI9341V |
| Interface | SPI (control) + 18‑bit RGB (data) |
| Touch Panel | 4‑wire resistive touch (RTP) |
| Backlight | 4 white LEDs (parallel connection) |
| Operating Temperature | -20 ~ +70 °C |
| Storage Temperature | -30 ~ +80 °C |
Absolute Maximum Ratings
| Parameter | Symbol | Min | Max | Unit |
|---|
| Operating temperature | Top | -20 | +70 | °C |
| Storage temperature | Tst | -30 | +80 | °C |
| Humidity | RH | – | 90 (at 60°C) | % |
DC Characteristics (Ta=25°C)
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|
| Logic supply voltage | VDD | 3.0 | 3.3 | 3.6 | V |
| Input current | Idd | – | 13 | – | mA |
| Input High Voltage | VIH | 0.7×VDD | – | VDD | V |
| Input Low Voltage | VIL | VSS | – | 0.3×VDD | V |
Backlight Characteristics (Ta=25°C, constant current)
| Parameter | Symbol | Min | Typ | Max | Unit | Condition |
|---|
| Forward voltage | Vf | 3.0 | 3.2 | 3.3 | V | If=80mA |
| LED current (total) | If | – | 80 | – | mA | Constant current |
Optical Characteristics (Ta=25°C, If=80mA)
Contrast RatioCRNormal angle-500–
| Item | Symbol | Condition | Min | Typ | Max | Unit |
|---|
| Luminance (center) | Lv | Normal angle | 200 | 250 | 300 | cd/m² |
| Luminance Uniformity | δ WHITE | – | 80 | – | – | % |
| Response Time (Tr+Tf) | – | TC=25°C | – | 15 | 24 | ms |
| Viewing Angle (3:00) | θL | CR≥10 | – | 45 | – | deg |
| Viewing Angle (9:00) | θR | CR≥10 | – | 45 | – | deg |
| Viewing Angle (6:00) | θU | CR≥10 | – | 50 | – | deg |
| White CIE (x) | Wx | Normal angle | – | 0.307 | – | – |
| White CIE (y) | Wy | Normal angle | – | 0.329 | – | – |
| NTSC Ratio | S | – | – | 55.3% | – | % |
Interface Pin Connection (40‑pin FPC – SPI + 18‑bit RGB + RTP, partial)
16-21R0-R5I/ORed data (6 bits)
| Pin No. | Symbol | I/O | Description |
|---|
| 1 | GND | P | System ground |
| 2 | LED-A | P | Backlight anode |
| 3-6 | LEDK1-K4 | P | Backlight cathodes (4 LEDs parallel) |
| 7-10 | XR, YU, XL, YD | I/O | 4‑wire resistive touch panel signals |
| 11 | RESET | I | Reset (active low) |
| 12 | VSYNC | I | Vertical sync |
| 13 | HSYNC | I | Horizontal sync |
| 14 | DOTCLK | I | Pixel clock |
| 15 | ENABLE | I | Data enable |
| 22-27 | G0-G5 | I/O | Green data (6 bits) |
| 28-33 | B0-B5 | I/O | Blue data (6 bits) |
| 34 | SD0 | O | SPI data out |
| 35 | SDI | I | SPI data in |
| 36 | SCL | I | SPI clock |
| 37 | CS | I | Chip select (active low) |
| 38 | IOVCC | P | I/O power supply (1.8~3.3V) |
| 39 | VCI | P | Analog power supply (2.8~3.3V) |
| 40 | GND | P | System ground |
Full 40‑pin pinout includes additional grounds and NC pins. The 18‑bit RGB bus uses R[5:0], G[5:0], B[5:0] (18 lines). SPI pins are used for command/configuration.
Reliability & Quality Assurance
Reliability Test Items (Pass Criteria)
- High temperature storage: 80±2℃, 48H
- Low temperature storage: -30±2℃, 48H
- High temperature operation: 70±2℃, 48H
- Low temperature operation: -20±2℃, 48H
- Thermal shock: -20℃ ↔ 70℃, 30min each, 10 cycles
- ESD test: Air ±6kV / Contact ±4kV, 330Ω/150pF, 5 points each
MTBF: 30,000 hours @ room temperature (25±10℃, 40±20% RH).
Failure judgment: After test, contrast ratio ≥50% of initial value, no display defects, and full electrical/optical functionality.
Quality Assurance (per MIL-STD-105E / GB2828)
- Inspection level: General II, single sampling
- Major defect AQL: 0.65
- Minor defect AQL: 1.5
- Test conditions: 25±5℃, 45±20% RH, 40W fluorescent lamp, 30cm viewing distance, 0°~45°
Handling & Storage Precautions
- Avoid mechanical shock or dropping – glass panel is fragile.
- If LCD fluid leaks, wash skin/clothes immediately with soap and water; do not ingest.
- Use grounded workstations and anti‑static bags for handling and storage.
- Storage: 0~35°C, 40~60% RH, in sealed polyethylene bag, no direct sunlight.
- Hand soldering: 320℃~350℃, max 10 seconds per pad, avoid repeated heating.
- Do not disassemble or modify the module – warranty void.
Packing Method
Modules are placed in anti‑static trays, stacked with foam protection, fixed with cardboard, and sealed in cartons. Detailed packing drawings available upon request.
Ordering & Support
The JicTech RT028TR5T-Q3 is available for engineering samples and mass production. For a complete datasheet, 2D drawing, or a quotation, please contact our B2B sales team.
Download product manual: FULL SPEC-RT028TR5T-Q3
📩 Request a quote or sample – email us today or use the inquiry form below.
